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A cylindrical rotor synchronous generator has steady state synchronous reactance

of $\text{0.7 pu}$ and subtransient reactance of $\text{0.2 pu}$. It is operating at $\left ( 1+j0 \right )$ $\text{pu}$

terminal voltage with an internal $\text{emf}$ of $\left ( 1+j0.7 \right )$ $\text{pu}$. Following a three-phase

solid short circuit fault at the terminal of the generator, the magnitude of the
subtransient internal $\text{emf}$ (rounded off to $2$ decimal places) is ____________ $\text{pu}$.
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